21331489301 has 2 divisors, whose sum is σ = 21331489302. Its totient is φ = 21331489300.

The previous prime is 21331489273. The next prime is 21331489337. The reversal of 21331489301 is 10398413312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21104535076 + 226954225 = 145274^2 + 15065^2 .

It is a cyclic number.

It is not a de Polignac number, because 21331489301 - 2²⁶ = 21264380437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21331489801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665744650 + 10665744651.

It is an arithmetic number, because the mean of its divisors is an integer number (10665744651).

Almost surely, 2^21331489301 is an apocalyptic number.

It is an amenable number.

21331489301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21331489301 is an equidigital number, since it uses as much as digits as its factorization.

21331489301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 21331489301 in words is "twenty-one billion, three hundred thirty-one million, four hundred eighty-nine thousand, three hundred one".